Valve core, container, and stem



Aug. 1 8, 1942, v H z- GORA 2,2934132 l* I VALVE CORE, CCNTAINEB, ANDSTEM Filed April '5, 1957 Henry Z". Gof;

Awhich is accessible, to the plug portion.

Patented Aug. 18, 1942 .VALVE CORE, CONTAINER, AND STEM Henry Z. Gora,Bridgeport, Conn., asslgnor to Jenkins Bros., Bridgeport, Conn.,

tion of New Jersey Application April s, iss'zfserial Nn. 134,863

' Claims.

The presentinvention relates to valve cores, core containers and torubber valve' stems embodying the cores and containers, a principalobject being to provide a capless type of stem wherein the core may bereadily screwed in or out in assembly and replacement.

The standard valve core comprises a plug portion which must be threadedto position in a container. According to the present invention the usualpin of the standard core is provided with a head, spaced from the plug,which normally lls the extremity of the core container for the purposeof excluding foreign matter. The container inwardlyoi the normalposition of the head isinternally enlarged so that when, as in aninilating operation, the head is moved into the enlarged zone, air mayreadily pass the head.

With such an arrangement the plug portion cannot be directly gripped forthe purpose of screw-S ing it completely to or from its operativeposition,

since access to it is blocked by the head. 'I'his difliculty I overcomeherein by providing means for transmitting rotative movement of thehead, One such means is shown by way of example in the accompanyingdrawing, in which:

Figure 1 is an elevation of aI rubber valve stem incorporating thepresent invention;

Figure 2 is an enlargedv section substantially on line 2-2 of Figure 1;

I'I which extends axially through the barrel l2 and projects above andbelow the plug and barrel.

At its lower end the pin I1 has secured thereto a cup I8 which carries acompressible washer I9 for direct cooperation with the vseat I3. Strungon the pin I1 is a volute compression spring whose lower end seats onthe ledge Il, the upper end of the spring bearing against abutments asat 2| on the pin Il. `The spring 20 thus actsl tohold the movable valvebody constituted by members I8 and I9 yieldably against the seat I3.

At its upper extremity pin I1 is reduced at 22 and is received in anopening in a head' 23 of circular cross section.

The head 23 on its face toward plug I6 is provided with a diametricalrecess or groove 24 against the top wall of which bears the shoulderwhich exists at the upper end portion of pin I1 by reason of the sizereduction of the latter and the extremity of the pin is riveted over ina counter-sink formed atV the top of the head opening so that, as hereshown, the head is rigidly xed on the pin. The` top face of the head isvrelieved at opposite sides to produce an upstanding diametrical rib ortongue 25.

The container II is inthe form of a tubular metal stem portion ofcircular cross section pro- `vided at its' upper or outer extremity witha Figure 3 is a view in perspective of the core appearing in Figure 2;and

Figure 4 is a plan view of the structure of Figure 2.

Referring to the drawing, the core is shown I by itself in Figure 3 andis generally designated by the reference numeral ,IIL In Figure 2 thecore is shown in operative position in the container generallydesignatedby the reference numeral II. i y

rThe core, except for the addition of a head and the necessarymodification of the valve pin in order to receive the head, may be ofstandard construction and is so shown in the drawing. It comprises abarrel I2 whichat its lower extremity has an annular valve seat I3 whichis surmounted by an internal annular ledge I4. Near its upper end thebarrel is exteriorly annularly relieved for the 4purpose of receiving apacking band I5.

circular opening 26 of slightly greater diameter than head 23 so thatwhen the latter is in the normal position shown in Figure 2 its full circular portion closes the opening. The clearance is preferablyextremely small, that is, merely suincient to permit free axial movementof the head inthe opening upon reciprocation of the pin I1 so thatproper sealing of the movable valve body will in no way be interferedwith.

Below the end opening 26 the container is internally conically enlarged,at '21, downwardly and outwardly to a cylindrical enlargement 28 belowwhich the internal walls of the container are inwardly approached at 29and provided with threads 29' engageable by thefplug portion I6. Belowthe threads the internal walls i of the container are downwardly andinwardly form with its longitudinal edges externally threaded and isprovided with a longitudinal openingwhich slidably receives` the valvepin I5. n The core and container are shown in operative relation inFigure '2, the parts being in their tapered to provide a seat for thepacking band ber portion between the head and the movable valve body.Foreign matter, such as dirt and water, is effectively excluded from thecontainer.

Assuming it to be desired to replace the core, it is evident that theplug portion I5 is entirely inaccessible to a tool of any kind in viewof the presence of the head 23 which blocks the upper end of thecontainer. With the provisions herein disclosed, however, the head 23may be depressed by a suitable tool to engage the upper part of plug I5in the groove 24, this part of the plugk and theI groove constitutinginterengageable clutch means between the head and plug so that rotativemovement imparted. to the head is directly and positively transmitted tothe plug. With the head and plug interengaged the latter may be readilyscrewed to position in the container or unscrewed therefrom, the rib 25being readily engageable by a suitable tool so that the head can beconveniently manipulated.

'I'he plug portion I5 is here shown as being separate from the barrelI2, but this is merely illustrative structure, it will be understood.With the illustrated core construction the threads of the plug portionI5 should preferably be engaged with` the threads 29' to a longitudinalextent which is greater than the distance between the top of plugportion I8 and the top of the recess 24 so that upon unscrewing the plugportion from the normal position shown in Figure 2, the barrel I2 willbe lifted from its seat due to the rise o f the plug portion by reasonof its unthreading movement. At the same time the distance between thebottom of head 23 and the top of the plug portion must be suiiicient topermit the head to pass inwardly for adequate air passage when the usualair coupling is applied to the stem.

In some of the standard cores the plug portion and barrel are swiveledtogether and in others the plug portion and barrel are made as a singlepiece. In these cases the barrel, of course, immediately follows theplug portion as the latter is unscrewed.

Any form of interengaging means between the head and plug may beprovided, the groove 24 being here shown as designed to receive anysuitable upstanding portion or portions of a plug. Rib 25 is preferablyat right angles to groove .24 so thatA the head 23 will have maximumstrength.

The container or tubular metal stem portion II may be associated with aninilatable body such as the innertube of an automobile tire in anysuitable manner, but as here shown it is incorporated, Figures 1 and 2,in lining relation to the upper portion of` the through bore 30 of theelongated body portion 3| of a rubber valve stem 32.

The valve stem 32 is of flexible rubber and has a base attaching flap 33which is preferably circular in plan. 'I'he ilap is marginally taperedto a thin edge at 33a, there being a shoulder 33h at the inner boundaryof the tapered portion,

this shoulder bounding a circular ilat portion 33o at the base of thebody 3| and concentric therewith.

The body 3l is shown as being of generally tapered form from base to tipand is circular in cross section. It has a gradually tapered portion 34rising from the flap 33 to a more abrupt inwardly and upwardly curvedportion 35. The portion 35 is surmounted by a cylindrical porshown inFigure 2 the external shape of the`upper endv of the insert II edetermines lthe shape of the upper portions 36 and 31 of the body 3|which in these zones has:a substantially uniform thickness. The insertis laterally completely rubber-covered, as here shown.

The insert I I is preferably bonded in the rubber body by vulcanizationduring the molding operation and to enhance the bond maybe provided withcircumferential ribs 'or ilns Ila as shown in Figure '2.

It will be understood that the application of the present invention isnot limited to rubber valve stems and that when applied to rubber valvestems the container may be of any desired length. I prefer, however, toconfine the length of the container in a rubber valve stem, to the tipportion o f the stem since greater stem nexibility is thus secured.'I'he insert is preferably completely covered laterally by the stemmaterial, as shown, but may project above the stem material if desired.

In a metal valve stem the container II might .be merely the upperportion of the stem.

I do not limit myself to these matters except as in the followingclaims.

I claim:

1. A valve core comprising a valve pin, a valve body carried by said pinat o'ne end of the latter, a barrel portion through which said pinextends, said barrel portion having at one end a seat for cooperationwith said valve body, spring means normally seating said valve body, anexternally threaded plug portion at the other end of said barrel, saidplug portion havingan opening through which said pin slidably projects,a head on the other end of said pin and spaced from said plug portionwhen said valve body is seated, and normally inoperative clutch meansrendered operative to transmit rotative movement of said head to saidplug portion only when said head is moved toward said plug portion.

2. A valve core comprising a valve pin, -a valve body carried by saidpin at one end of the latter, a barrel portion lthrough which said pinextends, said barrel portion having at one end a seat for cooperationwith said valve body,vspring means normally seating said valve body, anexternally threaded plug portion at .the other end of said barrel, saidplug portion having an opening through 4which said pin iprojects, a headon the other end of said pin and spaced from said plug portion when saidvalve body is seated, and normally inoperative clutch means renderedoperative to transmit rotative movement of said head to said plugportion only when said head is moved toward said plug portion, saidclutch means being constituted by interengageable parts of said head andsaid plug portion. v

3. In combination, a tubular metal valve stem portion and a coretherefor, said core comprising a plug threaded in said tubular valvestem portion and having an axial opening. a pin slidtion 36 which joinsa conical tip portion 31. As 75 able in said opening and projectingtherefrom in both directions, valve provisions including a movable valvemember carried by said pin at one end of the latter, a head on the otherend of said pin and normally positionedjand of .such size as tosubstantially iill an extremity of said tubular valve stem portion,spring means normally holding said head in its normal position andmaintaining said valve provisions closed, said head in its normalposition being spaced from `said plug pontion, said tubular valve stemportion being interiorly enlarged between its extremity and said plugportion, and means for transmitting rotative movement of said head tosaid plug portion. i,

4. In combinatioma tubular metal valve stem portion and a cor'etherefor, said core comprising a plug threaded in said tubular valvestem portion and having an axial opening, a pin in said opening andprojecting therefrom in both directions, valve provisions including amovable valve member carried by said pin at one end of the latter, aheadon the other end of said pin and normally positioned ando! such` size asto substantially lill an extremity of said tubular valve stem portion,spring means normally holding said head in its normal position andmaintaining said valve provisions closed, said head in its normalpostion being spaced from said plug portion, said tubular valve stemportion being interiorly enlarged between its extremity and said plugportion, and clutch means rendered `operative to transmit rotativemovementy of said head to said plug when said headisA moved toward saidplug portion.

5. In combination, a tubular metal valve stem portion and a coretherefor, said core'comprising a plug threaded in said tubular valvestem portion and having an axial opening, a pin in said opening andprojecting therefrom in both directions, valve provisions including amovable valve member carried by said pin at one end o! the latter, ahead on the other end of said pin and normally positioned and of suchsize as to valve stem portion, spring means normally holding said headin its normal position and maintaining said valve provisions closed,said head in its normal position being spaced from said plug portion,said tubular valve stem portion being int-erorlyV enlarged between itsextremity and said plug portion,v and clutch means rendered operative totransmit rotative movement of said head to said plug when said head ismoved toward said plug portion, said clutch means being constituted byinterengageable portionsof said head and said plug portion.

6. A valve stem comprising a rubber body having a through opening, atubular metal insert bonded in said body and lining at least the outerend portion of said opening, a valve core in said insert, said coreincluding a plug portion threaded in said insert and a reciprocabievalve pin extending through said plug portion, a head on lsaid. pin andnormally iilling the tip endo! said insert, said insert being internallyenlarged inwardly of the normal positionof said head, and means fortransmitting rotative movement of said head to said plug portion.

7. A valve core comprising a valve pin, a valve` body carried by saidpin at one vend of the latter,

a barrel portion through which said pin extends. said barrelportionhaving at one end a seat for on the other end o! said pin andspaced from said plugportion when said valve body is seated, said headhaving a groove on its underside adapted to receive an adjacent part ofsaid plug portion only when the head and plug portion are made toapproach each other whereby to transmit rotative movement of said headto said plug portion.

8. A valve core comprising a valve pin, a valve body carried by said pinat one end of the latter, a barrel portion through which said pinextends, said barrel portion having at one end a seat for cooperationwith said valve body, spring means normally seating said valve body, anexternally threaded plug portion at the other end of said barrel, saidplug portion having an opensubstantially iill an extremity of 'saidtubular ing through which said pin slidably projects, a head on theother end of said pin and spaced from -said plug portionwhen said valvebody is seated, said head having a groove on its underside adapted toreceive an adjacent part of said plug portion only when the head andplug portion are made to approach each other whereby to transmitrotative movement of said head to said plug portion, said head alsohaving an outer transverse means by which it may be engaged to berotated by a suitable tool, saidmeans being at right angles to saidgroove.

9. In combination, a tubular metal valve stem portion and a coretherefor, said core comprising a plug threaded in said tubular valvestem portion and having an axial opening, a pin slidable in said openingand' projecting therefrom in both directions, valve provisions includinga movable valve member carried by said pin at one end of the latter, ahead on the other end of said pin and normally positioned and of suchsize as to substantially iill an extremity Qi said tubular valve stemportion, spring means normally holding lsaid head in its normal positionand maintaining said valve provisions closed, said head in its normalposition being spaced from said plug portion, said tubular valve stemportion being interiorly enlarged between its extremity and said plugportion, said head having a groove x adapted to receive an adjacent partoi said plug cooperation with said valve body, spring means normallyseating said valve body, an externally threaded plug portion at theother end of said barrel, said plug portion having an opening throughwhich said pin slidably projects, a head portion when the head and plugportion are made to approach eachother whereby to -transmit rotativemovement of said head `to said plug portion.

10. In combination, a tubular metal valve stem portion and a coretherefor, said core comprising a plug threaded in said tubular valvestem portion and having an axial opening, a pin slidable in said openingand projecting therefrom in both directions, valve provisions includinga movable valve member carried by saidpin at one end of the latter, ahead on the other end or said pin and normallyA positioned and of suchsize as to substantially illl an extremity of said tubular valve stemportion, spring meansnormally holding said head in its normal positionand maintaining said valve provisions closed, said head in its normalposition being spaced from said plug portion, `said tubular valve stemportion `being,

interiorly enlarged between its extremity and said plug portion, saidhead having a groove adapted rto receive an adjacent part of said plugportion when the head and plug portion are madeto approach each otherwhereby to transmit rotative movement of said head to said plug portion,said head also having an outer transverse means by wlhlicltioit1 may beengaged to be rotated by a suita e o HENRY Z.

